Shaker sieve made of wire gauze and used for vibrators



June 27, 1933. R, HERRMANN 1,915,931

SHAKER SIEVE MADE OF WIRE GAUZE AND USED FOR VIBRATORS Filed April 25, 1952 iii.

1y strong. ,However in this case a smooth in single strong spring steel wires. I

i-gh qualityj Patented June 27, 1933 I,

UNITED STATES PATENT OFFICE BUDOLFY HERRMANN, ornansnmv, GERMANY V I sHAKnR'sI vnj nnE OF WIREGAUZE AND USED FOR vinm'rons Application filed April 25,1932, Serial no.

The invention refers to shaker sieves made of wire gauze and used for vibrators, the wlre gauze having the warp wires as well .asthe weft wires made of soft steel material'and having at certain distances inserted or shot If the weft wires madeof sprlng steelare lnserted' at greater d stances from each other, sald w res must,"1n order to have'suflicient firmness against pulland tear within the wire gauze, be made comparativecontinuous 'manufactureis not possible because, if'the wire gauzeis madegbymachines, the weaving process will have to; be'interrupted at short intervals, and this for the purpose of inserting the strong spring steel:

wires, so that herebv the weaving'p'rocess will be greatly prolonged and the costsfor manufacturing the. gauzebe correspondingly in-- creased.

If, on the other hand, the warp wires made of high quality steel material are only arranged at greater distances, then also" comparativelystrong ones must be used. Thus the weft wires are consequently particularly exposed to wear and tear. Additionally, the

- weak warp wires made of soft steel material and lying next to the thick spring steel warp wires will furthermore be pressed away too far from said thick warp wires, whereby within the wire gauze next to the thick spring steel warp wires rows of sieve-holes will be formed which in consequence of their greater amplitude will allow larger particles of the goods to be sifted to pass through and thus create an absolutely uneven sifting.

In order to avoid these disadvantages, ac-

' cording to the present invention two or more highquality spring steel warp wires of. mod- 6073912, and in Germany October 25, 1930.

crate size are arranged side by side at selected lntervals and are simultaneously looped together by the weft wires; thus the possibility is given to'produce the wire gauze in a smooth continuous manufacture, which greatly snnplifies the latter and keeps the costs low.

Furthermore the advantage is obtained that the deflection of the weft wires during the weaving procedureis smaller than on using single strongand thick spring steel warp wires. Also by the insertion of double warp wires of soft material next to the double spring {steel wires the pushing aside of'said warp wires ofsoftmaterial'is reduced to a minimum, At the same time the thickness of the spring steel warp wires-can be determined so that thestrengthagainst-pull of both these wires taken together at least cor-, responds to that ofthe thick spring steel warp-wire, otherwise required, in order to thus obtain at least the same firmness of the wire gauze, notwithstanding the use of individual-ly weaker wires.

In case an increased firmnessofthe wire" gauze is to be obtained, there can be further insertedbetween the two spring steel warp wiresa third equally strong oreven stronger spring steel warp wire, whloh may either he loosely'between the weaker spring steel warp w res or be W1I6S.'

' According to, the present invention the advantage is obtained that on the onehand the separately woven into the weft weft wires at the :points where they are crossed by the stronger warp wires will pro trude as little as possible and will be thus less exposed to wear and tear, and that on the other hand the manufacture of'a wire gauze for shaker sieves with evenly great meshes will" be ensured. In the annexed drawing the invention is shown by way of different examples.

Fig. 1 shows in a plan viewand Fig. 2 in cross-section on an enlarged scale a construct1on of wire gauze, 1n wh1oh,1nstead of a the]:

strong spring steel warp wire, two weaker spring steel warp wires a are arranged.

' On both sides of these two spring steel warp wires a" there are arranged two Warp wires a madeof soft pliant material which are interwoven together as a single warp wire, as will be seen from the cross-section shown in Fig. 3 shows a construction of wire gauzein which between thetwo weal; spring steel warp wires a there is further inserted a' third wire a which will either, as shown in Fig. 4 on an enlarged scale, be interwovenor interlooped with the wires a as asingle warp wireby the weft wires Z), or,'as is seen by Fig. 5 on an enlarged scale, the three spring steel warp wires a, 6/, a." will be each singly interwoven or interlooped by the weft;

WVithout departing from the. scope of rthe invention the above described diflferenticoir structions can also be used in connection with any desired woven fabric of any. required metal. 1 What I claim is:

o 1. A shaker sieve made otwire gauze for use as a vibrator comprising, warp and weft wires ofsoft steel material and warp wires of hi 'h .ualit s rin steel at selected intervals If) C) 7 said latter named warp wires consisting of a plurality otwires of DIOClQIUJJQSIZG woven together by the weft wires, as a single warp wire. 3

- 2. A shaker. sieve made of wire gauze for use as a vibrator comprising, warp and weft wires of soft steel material and warp wires of high quality spring steel at selected intervals, said latter named warp wires consisting of a plurality of wires of moderate size woven together by the weft wires as a single warp wire, the warp wires adjacent the said spring steel warp wires being formed of a plurality of soft steel wires woven together by the weft wires as a single warp wire.

Ashaker sieve made of wire gauze for use as a vibrator comprising, warp and weft wires of soft steelmaterial and warp wires of high quality spring steel at selected intervals, said latter named warp wires consisting of a pair of wires of'moderate sizeanda similar wire of larger size located therebetween woven together by the weft wires asa single WZLIP'W'IIB. v, a a

I 4. A shaker sieve. made of wire gauze for use a vibrator comprising, warp and weft wires otsoft. steel material and warp wires oihigh quality spring steel atselected intervals, said latternamed warp wires consisting ofa pair of wires of moderate size and a similar, wire of larger size located therebetween woven together by the weft wires as a single warpw-ire, the warp wires: adjacent the said spring, steel warp wires being formed of a plurality of soft isteel-wireswoven togetherby the-weft'wires as a single warp wire.

In testimony, thait'l' claim the foregoing as my invention, 1 havesigned my name this s 7 14th day ofApril1932.

, RunoLF' HERRMANN'; 

